MAX4081FAUA-T Equivalent & Substitute Parts

Part Overview

The MAX4081FAUA-T is a current sense amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for precision current measurement applications. This linear amplifier integrates one circuit in an 8-uMAX/uSOP surface mount package and operates across a wide supply voltage range of 4.5 V to 76 V with an operating temperature range of -40°C to 125°C.

The MAX4081FAUA-T is classified as an obsolete product. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this current sense amplifier topology.

Substiute Parts

MAX4081FAUA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 903MAX4081FAUA-T Datasheet

Current PartRFQ

MAX4081FAUA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2074MAX4081FAUA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4081FAUA-T is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier type classification as current sense amplifier
• Single circuit configuration
• -3dB bandwidth of 150 kHz
• Input bias current of 5 µA
• Input offset voltage of 100 µV
• Supply current of 103 µA
• Supply voltage range spanning 4.5 V to 76 V minimum and maximum
• Operating temperature range of -40°C to 125°C

Mechanical Equivalence Criteria:

• Surface mount mounting type
• 8-TSSOP/8-MSOP package with 0.118" (3.00mm) width
• Identical pinout and footprint compatibility

Compliance Equivalence Criteria:

• ROHS3 compliance status
• Moisture sensitivity level MSL 1 (Unlimited)

The substitute part MAX4081FAUA+T meets all electrical, mechanical, and compliance requirements for direct substitution. The difference between these part numbers reflects packaging configuration: the original part uses individual packaging, while the substitute uses Tape & Reel (TR) packaging. Both parts share the identical base product number MAX4081 and are manufactured by the same supplier.

Parameter Comparison

Engineering Selection Recommendations

The MAX4081FAUA+T is the direct substitute for the obsolete MAX4081FAUA-T. Selection of this substitute part is based on the following engineering factors:

Product Status Consideration: The MAX4081FAUA-T is classified as obsolete, while MAX4081FAUA+T maintains active product status from the manufacturer. This ensures continued availability, technical support, and manufacturing consistency.

Electrical and Mechanical Equivalence: All electrical parameters, including bandwidth, bias current, offset voltage, supply current, and supply voltage range, are identical between the main part and substitute. The mechanical package specification, pinout, and footprint are fully compatible, enabling direct substitution without circuit redesign or PCB layout modification.

Compliance and Certification: Both parts maintain identical ROHS3 compliance and MSL 1 moisture sensitivity ratings, ensuring compatibility with environmental and regulatory requirements.

Packaging Difference: The primary distinction between these parts is packaging format. The substitute part is supplied in Tape & Reel (TR) configuration, which is standard for high-volume production environments. If individual packaging is required, this must be addressed through packaging conversion services or alternative sourcing channels.

Frequently Asked Questions (FAQ)

Q: Can MAX4081FAUA+T be used as a direct replacement for MAX4081FAUA-T in existing designs?

A: Yes. The MAX4081FAUA+T is electrically and mechanically identical to the MAX4081FAUA-T. No circuit modifications, PCB layout changes, or firmware updates are required. The parts share identical pinout, package dimensions, and all electrical specifications.

Q: What is the difference between MAX4081FAUA-T and MAX4081FAUA+T?

A: The difference is packaging configuration only. MAX4081FAUA-T uses individual packaging, while MAX4081FAUA+T is supplied in Tape & Reel (TR) format. The actual semiconductor component and all electrical characteristics are identical.

Q: Why is the MAX4081FAUA-T listed as obsolete?

A: The MAX4081FAUA-T has reached end-of-life status from the manufacturer. The MAX4081FAUA+T, with active product status, represents the current manufacturing offering for this current sense amplifier topology.

Q: Are there any compatibility issues with the 8-TSSOP/8-MSOP package?

A: No. Both the main part and substitute use the identical 8-TSSOP/8-MSOP package with 0.118" (3.00mm) width. PCB footprints, solder pad layouts, and component placement are fully compatible.

Q: What is the supply voltage operating range for this current sense amplifier?

A: The operating supply voltage range is 4.5 V to 76 V, enabling use in applications ranging from low-voltage battery-powered systems to high-voltage industrial and automotive environments.

Q: Is the MAX4081FAUA+T RoHS compliant?

A: Yes. The MAX4081FAUA+T is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and reliability standards for commercial and industrial applications.

Q: What is the bandwidth specification of this current sense amplifier?

A: The -3dB bandwidth is 150 kHz, defining the frequency response characteristics for current measurement accuracy and signal fidelity in the specified operating range.